Twinned fluorite crystals. Fluorite,or fluorspar,is a halide mineral composed of calcium fluoride (CaF2). Here the crystals are twinned. Crystal twinning occurs when two crystals grow together,forming an interlocked twinned structure. This samples is an example of penetration twinning. This specimen measures 60mm across and was found in Durham,UK | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 5025 px × 3519 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |